Hi there,
I know how handy the mobile app for QuickBooks Online can be for your business. While you're on-the-go, it's essential that you're able to do essential tasks like invoicing, creating estimates, and receiving payments. I'd be happy to explain a few troubleshooting steps you can take in order to get back on track.
If you're having no trouble logging in on the website, you may have downloaded the wrong app by mistake. Ensure you've downloaded the QuickBooks Online app, rather than the app for QuickBooks Self-Employed.
It's also important to make sure you've downloaded the Canadian version of the mobile app. You can also try uninstalling and reinstalling the app.
If you're still having trouble logging in on the mobile app, please reach out to our tech support team.
Cheers.